我有AAPL的以下数据:
High Low Open Close Volume Adj Close
Date
1987-12-31 1.535714 1.495536 1.517857 1.500000 29400000.0 1.200883
1988-01-04 1.598214 1.508929 1.526786 1.598214 82600000.0 1.279513
1988-01-05 1.651786 1.580357 1.642857 1.593750 77280000.0 1.275938
1988-01-06 1.607143 1.562500 1.607143 1.562500 67200000.0 1.250920
1988-01-07 1.598214 1.517857 1.553571 1.589286 53200000.0 1.272364
... ... ... ... ... ... ...
2007-12-24 28.475714 27.827143 27.861429 28.400000 120050700.0 24.785059
2007-12-26 28.708570 28.117144 28.430000 28.421429 175933100.0 24.803761
2007-12-27 28.994286 28.257143 28.421429 28.367144 198881900.0 24.756376
2007-12-28 28.794285 28.125713 28.655714 28.547142 174911800.0 24.913471
2007-12-31 28.642857 28.250000 28.500000 28.297142 134833300.0 24.695290
5044 rows × 6 columns
我想做的是添加另一列,该列将按月和年对所有数据进行分组。这样,我可以在几个月或几年内进行手术。日期已在日期时间中。
答案 0 :(得分:0)
您可以提取年份和月份,并将它们放在“年”和“月”两列中,
df['year'] = df['Date'].dt.year
df['month'] = df['Date'].dt.month
如果您只希望使用“ year_and_month”列,则可以使用:
df['year_and_month'] = df['Date'].dt.year.astype('str') + '-' + df['Date'].dt.month.astype('str')